872490179 has 4 divisors (see below), whose sum is σ = 951807480. Its totient is φ = 793172880.

The previous prime is 872490161. The next prime is 872490239. The reversal of 872490179 is 971094278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 872490179 - 2⁸ = 872489923 is a prime.

It is a super-2 number, since 2×872490179² = 1522478224902904082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872490679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39658634 + ... + 39658655.

It is an arithmetic number, because the mean of its divisors is an integer number (237951870).

Almost surely, 2^872490179 is an apocalyptic number.

872490179 is a deficient number, since it is larger than the sum of its proper divisors (79317301).

872490179 is a wasteful number, since it uses less digits than its factorization.

872490179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79317300.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 872490179 is about 29537.9447321577. The cubic root of 872490179 is about 955.5502175508.

The spelling of 872490179 in words is "eight hundred seventy-two million, four hundred ninety thousand, one hundred seventy-nine".